Rock and Roll: An American Story
"is divided into separate Books, each focusing on a different era of American popular music. Within each Book are a series of media-rich Chapters and Lessons. Click on Chapters and Lessons below to view a table of contents for each Book."
(teachrock.org)

Rock music "is a genre of popular music that originated as "rock and roll" in the United States in the 1950s, and developed into a range of different styles in the 1960s and later, particularly in the United Kingdom and the United States.[1][2] It has its roots in 1940s' and 1950s' rock and roll, itself heavily influenced by rhythm and blues and country music. Rock music also drew strongly on a number of other genres such as blues and folk, and incorporated influences from jazz, classical and other musical sources."(Wikipedia)

Pink Floyd in pictures - 20 photos
"The band's 14 studio albums have been remastered and will be available on CD from today (2011).
To mark the occasion, we look back at the band's career in pictures." (telegraph.co.uk)

Rock
and Roll Hall of Fame"The Rock and Roll Hall of Fame and Museum is a museum located
on the shores of Lake Erie in downtown Cleveland, Ohio, United States,
dedicated to recording the history of some of the best-known and most
influential artists, producers, and other people who have in some
major way influenced the music industry, particularly in the area
of rock and roll."(Wikipedia)

Bo Diddley(1928 - 2008)He "was an influential American rock and roll singer,
songwriter, and guitarist.
Often cited as a key figure in the transition
from blues to rock and roll..."(Wikipedia)- a video(YouTube)